review practice open response questions 2. classifying matter physical vs. chemical changes...

1.1. Review Practice Review Practice Open Response Open Response

QuestionsQuestions

2. Classifying Matter2. Classifying Matter3.3. Physical vs. Physical vs.

Chemical ChangesChemical Changes---------------

HomeworkStudy Guide- DUE

Tomorrow

1.1. Review Practice Review Practice Open Response Open Response

QuestionsQuestions

2. Classifying Matter2. Classifying Matter3.3. Physical vs. Physical vs.

Chemical ChangesChemical Changes---------------

HomeworkStudy Guide- DUE

Tomorrow

Major Celebration of Knowledge NEXT

TuesdayReading chemical

formulas, measuring matter & physical vs.

chemical changes

Major Celebration of Knowledge NEXT

TuesdayReading chemical

formulas, measuring matter & physical vs.

chemical changes

A. Identify what property of the sample is being measured with the graduated cylinder.

The property being measured with the graduated cylinder

is volume of a liquid.

The property being measured with the graduated cylinder

is volume of a liquid.

B. Identify the measurement of the sample in the graduated cylinder. Include units!

The graduated cylinder shows a measurement of

36.5 mL.

The graduated cylinder shows a measurement of

36.5 mL.

C. Identify the measurement of the sample in the beaker. Include units.

The beaker shows a measurement of 35

mL.

The beaker shows a measurement of 35

mL.

D. Explain why the measurements would be recorded differently when the sample is in the graduated cylinder and when it is in the beaker.

The graduated cylinder is used to

get a more accurate measurement

because it has more intervals.

The graduated cylinder is used to

get a more accurate measurement

because it has more intervals.

Topic Sentence

For 1st PropertyA.B.C.

For 2nd PropertyA.B.C.

Conclusion

Complete Sentences!

Complete Sentences!

A.  Identify the two properties of the cube that must be known in order for Jorge to determine the density of the cube.

The two properties that must be known to determine the

density of the cube are mass and volume.

The two properties that must be known to determine the

density of the cube are mass and volume.

B. Describe how Jorge could measure each of the properties of the cube you identified in part (a). Be sure to identify any tools Jorge would use and describe how he would use them.

Jorge can use a triple beam balance to measure the mass of the cube. To

determine the volume of the cube, he could use a ruler to measure the length,

width and height of the cube and multiply them together.

Jorge can use a triple beam balance to measure the mass of the cube. To

determine the volume of the cube, he could use a ruler to measure the length,

width and height of the cube and multiply them together.

C. Explain how the measurements you described in part (b) can be used to determine the density of the cube.

The mass and volume of an object can be used to determine

the density of the material. Density equals mass divided by

volume.

The mass and volume of an object can be used to determine

the density of the material. Density equals mass divided by

volume.

Physical ChangesPhysical Changes Chemical ChangesChemical Changes

1.1. Review Practice Review Practice Open Response Open Response

QuestionsQuestions

2. Classifying Matter2. Classifying Matter3.3. Physical vs. Physical vs.

Chemical ChangesChemical Changes---------------

HomeworkStudy Guide- DUE

Tomorrow

1.1. Review Practice Review Practice Open Response Open Response

QuestionsQuestions

2. Classifying Matter2. Classifying Matter3.3. Physical vs. Physical vs.

Chemical ChangesChemical Changes---------------

HomeworkStudy Guide- DUE

Tomorrow

Major Celebration of Knowledge NEXT

TuesdayReading chemical

formulas, measuring matter & physical vs.

chemical changes

Major Celebration of Knowledge NEXT

TuesdayReading chemical

formulas, measuring matter & physical vs.

chemical changes

Matter is everywhere. Matter is anything that takes up space

and has mass. Matter is constantly experiencing both

chemical and physical changes.

A physical change alters the form of a substance, but does not change it to another substance.

It changes shape or size It dissolves. It changes phase (freezes,

boils, evaporates, condenses) Example:

Making Orange Juice

Physical changes occur when matter changes its

property but not its chemical nature.

Physical property changes could include a change

in: texture, shape, size, color, odor, volume, mass,

weight, and density.

Chemical changes are changes matter undergoes

when it becomes new or different matter.

It burns

Temperature changes without heating/cooling

It bubbles (makes a gas)

It changes color

It forms a precipitate

When a substance undergoes a chemical change, it is changed into a different substance with different properties.

To identify a chemical change look for signs such as color change, bubbling and fizzing, light production, smoke, and presence of heat.

Example:

Baking a Cake

1. Precipitation

2. Color Change

4. Temperature

Change

3. Gas Production

A chemical change occurs when fireworks are used. Fireworks are made of metals such as magnesium and copper. These change chemically as they light up the sky.

Sugar dissolving in tea

Examples for Chemical Change

Logs burning

Breaking water up by separating it into hydrogen and oxygen

Physical Change

Ice melting?

Toast burning?

Chemical Change

Rocket fuel burning?

Chemical Change

Metal rusting?

Chemical Change

Crushing an aspirin

A Boiled egg

Physical

Change

Cutting paper?

Physical Change

Physical Change

Sawing wood?

Disappearing puddle?

Physical Change

Candle burning?

Chemical Change

Tears up paper?

Physical change

Mixes salt and water?

Physical change

Burns paper?

Chemical change

Evaporates salt water?

Physical change

Mixes vinegar and baking soda?

Chemical change

Write a paragraph about the difference between a chemical

and physical change. Give examples of each.